package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.apache.ibatis.annotations.ResultMap;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1:将页面提交的密码password进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2：根据页面提交的用户名username查询数据库
        Employee emp = employeeService.selcetByUsername(employee.getUsername());
        //3：如果没有查询到这返回失败结果
        if (emp == null) {
            return R.error("登录失败");

        }
        //4：密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }
        //5：查看员工状态，如果已禁用状态，这返回员工禁止结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }
        //6：登录成功，将员工的id存入到session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清楚Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request ,@RequestBody Employee employee){
//        //新增员工之前 先判断username是重复  因为字段索引式unique       用全局异常类获取
//        Employee emp = employeeService.selcetByUsername(employee.getUsername());
//        if (emp!=null){
//            return R.error("账号重复");
//        }
        //先把接收到的员工信息打出来看看
        log.info("新增员工，员工信息{}"+employee.toString());
        //1:设置默认的初始密码都为123456
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //2:设置当前创建时间 更新时间  创建者的id 修改者的id
               //公共字段自动填充，元素据对象处理器
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setCreateUser((Long)request.getSession().getAttribute("employee"));
        //employee.setUpdateUser((Long)request.getSession().getAttribute("employee"));
        //3:调用server层方法  新增员工
        boolean save = employeeService.save(employee);
        //4:返回结果
        if (save){
          return   R.success("新增成功");
        }else {
          return   R.error("新增失败");
        }

    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
         log.info("page={},pageSize={},name={}",page,pageSize,name);
         //其实我认为式这个逻辑处理应该另外写方法再server中做的  这里就跟着教程走吧
         //1：构建分页构造器
        Page<Employee> pageinfo = new Page(page,pageSize);
        //2:构造条件构造器
        LambdaQueryWrapper<Employee> QueryWrapper = new LambdaQueryWrapper<>();
        //3：添加过滤条件
        QueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //4:添加排序条件
        QueryWrapper.orderByDesc(Employee::getUpdateTime);
        //5:执行分页查询
        employeeService.page(pageinfo,QueryWrapper);
        return R.success(pageinfo);
    }

    /**
     * 根据id修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        Long empId = (Long) request.getSession().getAttribute("employee");
        Long id = Thread.currentThread().getId();
        log.info("线程id={}",id);
              //元数据对象处理器  公共字段自动填充
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        //执行更新操作
        employeeService.updateById(employee);
        //返回结果
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id插叙员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据查询员工信息");
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工");
    }
}
